The impact of implementation intentions in changing complex health-related behaviours in order to prevent weight gain: the case of physical activity
| ISRCTN | ISRCTN81041724 |
|---|---|
| DOI | https://doi.org/10.1186/ISRCTN81041724 |
| Secondary identifying numbers | NTR620 |
- Submission date
- 28/04/2006
- Registration date
- 28/04/2006
- Last edited
- 06/01/2021
- Recruitment status
- No longer recruiting
- Overall study status
- Completed
- Condition category
- Other
Prospectively registered
Protocol
Statistical analysis plan
Results
Individual participant data
Plain English summary of protocol
Not provided at time of registration
Contact information
Dr Emely de Vet
Scientific
Scientific
Erasmus Medical Center
Department of Public Health
P.O. Box 2040
Rotterdam
3000 CA
Netherlands
| Phone | +31 (0)10 4638460 |
|---|---|
| e.devet@erasmusmc.nl |
Study information
| Study design | Randomised controlled parallel group trial |
|---|---|
| Primary study design | Interventional |
| Secondary study design | Randomised controlled trial |
| Study setting(s) | Not specified |
| Study type | Prevention |
| Scientific title | The impact of implementation intentions in changing complex health-related behaviours in order to prevent weight gain: the case of physical activity |
| Study objectives | We hypothesised that forming implementation intentions (II) may increase levels of physical activity. |
| Ethics approval(s) | Received from the local medical ethics committee |
| Health condition(s) or problem(s) studied | No condition, healthy person |
| Intervention | Participants were randomly assigned to one of four conditions: 1. Control group 2. Forming single implementation intentions for walking 3. Forming implementation intentions for self-selected activities 4. Forming repeated implementation intentions for self-selected activities At the end of the pretest questionnaire, all participants were asked to increase their physical activity with at least two hours per week. The participants in the II groups (group 2, 3 and 4) were additionally asked to write down: 1. What activity they were planning to do 2. What day(s) they were planning to do this activity 3. When they were planning the activity (e.g. before or after work) 4. Where they would do the selected activity (e.g. in the park) 5. What time they would spent doing the activity This exact procedure was employed at three moments for participants in the repeated II condition (group 4) and at pretest with respect to walking instead of self-selected activities for the single II for walking group (group 2). Forming implementation intentions took about ten minutes. |
| Intervention type | Other |
| Primary outcome measure | Post-tests took place two weeks, three months and six months post-intervention and included measures of body mass index (BMI), physical activity, and cognitions. |
| Secondary outcome measures | No secondary outcome measures |
| Overall study start date | 01/03/2004 |
| Completion date | 01/09/2005 |
Eligibility
| Participant type(s) | Patient |
|---|---|
| Age group | Adult |
| Lower age limit | 18 Years |
| Sex | Both |
| Target number of participants | 709 |
| Total final enrolment | 709 |
| Key inclusion criteria | Adults aged between 18 and 65 years. |
| Key exclusion criteria | Does not comply with the above inclusion criteria |
| Date of first enrolment | 01/03/2004 |
| Date of final enrolment | 01/09/2005 |
Locations
Countries of recruitment
- Netherlands
Study participating centre
Erasmus Medical Center
Rotterdam
3000 CA
Netherlands
3000 CA
Netherlands
Sponsor information
Erasmus University Medical Center
University/education
University/education
PO Box 2040
Rotterdam
3000 CA
Netherlands
| Website | http://www.erasmusmc.nl/ |
|---|---|
"ROR" |
https://ror.org/018906e22 |
Funders
Funder type
Research organisation
ZonMw
Private sector organisation / Other non-profit organizations
Private sector organisation / Other non-profit organizations
- Alternative name(s)
- Netherlands Organisation for Health Research and Development
- Location
- Netherlands
Results and Publications
| Intention to publish date | |
|---|---|
| Individual participant data (IPD) Intention to share | No |
| IPD sharing plan summary | Not provided at time of registration |
| Publication and dissemination plan | Not provided at time of registration |
| IPD sharing plan |
Study outputs
| Output type | Details | Date created | Date added | Peer reviewed? | Patient-facing? |
|---|---|---|---|---|---|
| Results article | results | 06/03/2009 | 06/01/2021 | Yes | No |
Editorial Notes
06/01/2021: Publication reference and total final enrolment added.
